The Harmony XB4F series made of metal offers a wide range of 30 mm complete devices, including push buttons, indicator lights, and selector switches, as well as emergency stop switches. Additionally, the modular design of the devices allows all components to be purchased as individual elements, and they can also be made for a 22 mm installation size if desired. Due to their quality, flexibility, and extreme robustness (protection classes up to IP69K), these devices are ideal for most applications in industry and buildings. This key switch in black features 1 normally open contact and has 2 positions. Installed in a 30 mm hole, the device connects via screw terminals on the back of the product. Due to the variety of existing product standards and certifications, it is suitable for international use. Thanks to the Green Premium environmental label, you can obtain detailed information about material contents, environmental impacts, and circular economy that support your sustainability goals.